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mitcontrac
Beginner

LAN Issue

On my network I have 75 users. Only 2 users are reporting me network is slow. How can I troubleshoot those 2 users only. all other users says network is working fine.

4 REPLIES 4
Leo Laohoo
VIP Community Legend

Do an extended ping to the computers from the switch, from the distribution and from the core.  

 

Next, ask more questions:  What applications are causing slowness.  Did you check for line errors?  How about speed/duplex settings?  

 

See for yourself if what they are saying is true?  Can you ask the two users to log in to a different machine and still get the same response?

mitcontrac
Beginner

Leo,

 

When they are downloading emails, they are having slow network issues.

 

Thank You

Leo Laohoo
VIP Community Legend

When they are downloading emails, they are having slow network issues.

Ok.  So do a continuous ping from the clients to the email server.  


Check the interface(s) of the email servers for any line errors or line faults.  Check the switch logs for any signs of interface bouncing.

Lee Valentin
Beginner

Use Wireshark.

 

Let it run and when they have the issue, stop it. Look for the time they had the issue and begin your investigation

 

View > Time Display format > Seconds since Previous Displayed Packet

 

Look for large gaps in time and look at the packets

 

Use the Expert Info view and look at Errors and Warnings tabs.

 

Good luck